AMS AS1337 User guide

Brand: AMS

Model: AS1337

Type: User guide

austriamicrosystems AG

is now

ams AG

The technical content of this austriamicrosystems application note is still valid.

Contact information:

Headquarters:

ams AG

Tobelbaderstrasse 30

8141 Unterpremstaetten, Austria

Tel: +43 (0) 3136 500 0

e-Mail: ams_sales@ams.com

Please visit our website at www.ams.com

AS1337– AN01- Demoboard

www.austriamicrosystems.com Revision 1.0 / 2011/11/15 1 - 6

Application Note: AN01- Demoboard

AS1337

200mA, DC-DC Step-Up Converter with Buck Mode

Preliminary Application Note

ams AG

Technical content still valid

AS1337– AN01- Demoboard

www.austriamicrosystems.com Revision 1.0 / 2011/11/15 2 - 6

Table of Contents

1 FURTHER APPLICATIONS ................................................................................................................... 3

2 REVISION STATUS .............................................................................................................................. 3

3 GENERAL DESCRIPTION ..................................................................................................................... 3

4 GETTING STARTED ............................................................................................................................. 4

5 HW- OVERVIEW ................................................................................................................................... 4

5.1 AS1337 Demoboard jumper and device locations ....................................................................................... 4

5.2 AS1337 Demoboard 1V0 schematic ............................................................................................................. 4

5.3 AS1337 Demoboard 1V0 layout .................................................................................................................... 5

6 COPYRIGHT ........................................................................................................................................ 6

7 DISCLAIMER ....................................................................................................................................... 6

AS3610

ams AG

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AS1337– AN01- Demoboard

www.austriamicrosystems.com Revision 1.0 / 2011/11/15 3 - 6

1 Further Applications

Visit our home-page: http: //www.austriamicrosystems.com

2 Revision status

AS1337- AN01 - Demoboard Rev.: 1V0

AS1337 Demoboard – Layout Rev.: 1V0

AS1337 Demoboard – Schematic Rev.: 1V0

3 General Description

Connector Description

Measurement Point Description

Label Name Description Info

VIN

Supply Voltage

Measurement Points

G GND Ground

H LX External Inductor

I VOUT Output Voltage

J EN Enable Input

K FB Feedback

L POK POK

M EN Enable

ON: The AS1337 is enabled

OFF: The AS1337 is disabled

No Jumper: Connect a valid enable signal

via external connector “C”.

Label Name Description Info

A VIN Supply Voltage

Supply voltage ranging from 0.65V to 4.5V

B GND Ground

C EN Enable Input

Set the digital input “high” for normal operation.

For shutdown, set “low”

D VOUT Output Voltage Output voltage ranging from 2.5V to 5.0V

E POK POK high, when VOUT is within regulation

Figure 1: Board Description

Connector

Figure 2

: Board Description

–

Measurement Points

ams AG

Technical content still valid

AS1337– AN01- Demoboard

www.austriamicrosystems.com Revision 1.0 / 2011/11/15 4 - 6

4 Getting Started

The AS1337 Demoboard is designed to work with the AS1337A “Battery connected in shutdown” version.

With the resistor divider R1/R2 it is possible to adjust the VOUT.

On this Demoboard the following resistor values are mounted:

R1 = 560k and R2 = 330k  VOUT

= 3.3V

5 HW- Overview

5.1 AS1337 Demoboard jumper and device locations

Listed below are the various connectors and jumpers.

5.2 AS1337 Demoboard 1V0 schematic

Application schematic

Ref.

Function Value Description Manufacturer Mfg. Order Nr.

C1s Input Capacitor 10µF 0805 / X5R / 6.3V Murata GRM219R60J106KE19

C2s Output Capacitor 22µF 0805 / X5R / 6.3V Murata GRM21BR60J226ME39

L1 Coil 4.7µH 50mΩ / 1.82A / 6.8x6.0x2.4mm Coilcraft MOS6020-472ML

R1 Resistor (VOUT) 560k 0805/ ±1% Multicomp MC 0.1W 0805 1% 560K

R2 Resistor (VOUT) 330k 0805/ ±1% Multicomp MC 0.1W 0805 1% 330K

R3 R

POK

100k 0805/ ±1% Multicomp MC 0.1W 0805 1% 100K

U1 DC/DC Converter ASSE TQFN 3x3mm 8-pin austriamicrosystems AS1337A-BTDT

ams AG

Technical content still valid

AS1337– AN01- Demoboard

www.austriamicrosystems.com Revision 1.0 / 2011/11/15 5 - 6

5.3 AS1337 Demoboard 1V0 layout

Layout (top view)

Layout (bottom view)

ams AG

Technical content still valid

AS1337– AN01- Demoboard

www.austriamicrosystems.com Revision 1.0 / 2011/11/15 6 - 6

6 Copyright

merged, translated, stored, or used without the prior written consent of the copyright owner.

All products and companies mentioned are trademarks or registered trademarks of their respective companies.

7 Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions

appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by

description regarding the information set forth herein or regarding the freedom of the described devices from

patent infringement. Austriamicrosystems AG reserves the right to change specifications and prices at any time

and without notice. Therefore, prior to designing this product into a system, it is necessary to check with

austriamicrosystems AG for current information.

This product is intended for use in normal commercial applications. Applications requiring extended temperature

range, unusual environmental requirements, or high reliability applications, such as military, medical life-support

or lifesustaining equipment are specifically not recommended without additional processing by

austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might

show deviations from the standard production flow, such as test flow or test location.

The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However,

austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not

limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,

special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing,

performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise

or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters

austriamicrosystems AG

Tobelbader Strasse 30

Schloss Premstaetten

A-8141 Unterpremstaetten, Austria

T. +43 (0) 3136 500 0

F. +43 (0) 3136 5692

For Sales Offices, Distributors and Representatives, please visit:

http://www.austriamicrosystems.com/contact

ams AG

Technical content still valid

AMS AS1337 User guide

AMS AS1337 User guide

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